diff options
Diffstat (limited to 'sysdeps/i386/configure')
| -rw-r--r-- | sysdeps/i386/configure | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/i386/configure b/sysdeps/i386/configure index baa66096a6..e60b4982e4 100644 --- a/sysdeps/i386/configure +++ b/sysdeps/i386/configure @@ -348,3 +348,47 @@ fi fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_novzeroupper" >&5 $as_echo "$libc_cv_cc_novzeroupper" >&6; } + +# Check for support of thread-local storage handling in assembler and +# linker. +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for i386 TLS support" >&5 +$as_echo_n "checking for i386 TLS support... " >&6; } +if ${libc_cv_386_tls+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat > conftest.s <<\EOF + .section ".tdata", "awT", @progbits + .globl foo +foo: .long 1 + .section ".tbss", "awT", @nobits + .globl bar +bar: .skip 4 + .text +baz: leal bar@TLSLDM(%ebx), %eax + leal bar@DTPOFF(%eax), %edx + subl foo@GOTTPOFF(%edx), %eax + subl $bar@TPOFF, %eax + movl foo@GOTNTPOFF(%edx), %ecx + movl %gs:(%ecx), %eax + movl %gs:bar@NTPOFF, %eax +EOF +if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; }; then + libc_cv_386_tls=yes +else + libc_cv_386_tls=no +fi +rm -f conftest* +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_386_tls" >&5 +$as_echo "$libc_cv_386_tls" >&6; } +if test $libc_cv_386_tls = no; then + as_fn_error $? "the assembler must support TLS" "$LINENO" 5 +fi + +$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h + |